How does SuperRare work?

Could you elaborate on the operational mechanisms of SuperRare? Specifically, how does it facilitate the buying and selling of digital artworks? Does it employ a decentralized platform, and if so, how does that contribute to the overall process? Are there any specific steps or procedures that artists and collectors need to follow in order to engage with SuperRare? Furthermore, what measures does SuperRare take to ensure the authenticity and uniqueness of the artworks listed on its platform? I'm curious to understand the role blockchain technology plays in SuperRare's operations and how it impacts the art market.